Press.



LT. MEAKIN.

PRESS.

APPLlcAloN FILED Amar, 190s.

2 SHEETS-SHEET 1.

THE NoRR/S PETERS Co.. PHGTC-LITHO.. WASHINUVON. n C.

E. T. MEAKIN.

PRESS.

APPLlAloN FILED- APR. 21. 190s. RENEWED A UG. 25. 1914.

Patented Am". 33, 1915.

2 SHEETS-SHEET 2.

EDGAR, T. MEAKIN, OF OAKLAND, CALIFORNIA.

PRESS.

Specification of Letters Pat-ent.

Patented Apr.. 13, 12315.

Application filed April 27, 19H98, Serial No. 429,565. Renewed August 25, 1914. Serial No. 853,519.

To all whom it may concern Be it lrnown that I, VEDGAR T. MEAKIN, of Uakland, county of Alameda, State of Calii'ornia, have invented certain new and useful Improvements in Presses, whereof the ollowing is a specification.

My invention relates to presses, for various purposes. It may be best understood from the subjoined description of a machine for pressing the juice from fruit. In this machine I arrange two operating cylinders end to end, that is axially alined, in tandem, with a piston in each, one of which pistons connects with a compressive plunger' in a cylindrical press and the second piston of the tandem is connected by a yoke with a head which closes the end of the press so that the fruit or other material is pressed between said head and the plunger, moving in the press cylinder. rIhe press cylinder is suitably perforated so that the juice Hows freely from it, and is connected with any suitable receiving means, for the purpose of collecting the extracted juice. In connection with the power cylinders I employ, preterably, hydraulic power transmission to operate the same, the water being admitted to one of the cylinders through a pipe provided with an automatically operated valve and from that cylinder the water may pass to the second power cylinder through a by-pass and valve, whereby the second cylinder may be caused to operate after a certain limited initial operation of the first one. rIhese valves will be more particularly described in connection with the drawings, which illustrate Jfully their various movements. I also provide the press cylinder with suitable feeding and discharge means and other details which will appear hereinafter.

In the accompanying drawings which form a part of this specification I have illustrated my invention to better show its novel features, and in which- Figure 1 is a horizontal sectional view of the complete press. Fig. 2 is a ragmental side elevation of the machine showing particularly the means by which a hydraulic controlling valve is automatically operated. Fig. 3 is a side elevation of the automatic controlling means of the valve and it appears at the moment the stroke is reversed. Fig. 4 is a side elevation of the valve showing particularly the means for controlling the traveling of the plug.

Lilie letters of reference made use ot in the several figures indicate like parts wherever employed.

1 represents one hydraulic cylinder and 2 a piston movable therein. 3 is the other hydraulic cylinder of the tandem and i its piston.

5 is a piston rod connected with piston 2 at one end and extending through the end of cylinder 1 and carrying a compressive plunger 6 at its other end. This plunger moves in the perforated cylinder 7 and is made hollow so as to receive the cylinder 1.

8 represents the first body of material pressed, and 9 the second body ci material under pressure in the press cylinder 7 as particularly shown in Fig. l.

10 is a piston rod connected with piston l and acting through the yoke 11 upon the head 12 by means of connecting rods 13 shown in Fig. l, which closes the outer end of the cylinder 7.

14 is a discharge chute at the end o'l' cylinder 7 and 15 is a collecting funnel to receive the extracted juice and convey it to a suitable receptacle not shown in the drawings.

16 is a feeding hopper and 17 is material therein ready to feed into the press cylinder.

1S is a cover shown in section in Fig. 1, and arranged around the press cylinder to direct the extracted juice into the collecting funnel 15.

19 is a iioor above the machine from which the material is fed into the hopper 16.

20 is a by-pass provided with a valve 21 connecting the cylinders 1 and 3 together.

22 is a feed pipe through which water passes through valve 23 and the pipe 24 into the cylinder 1. This valve is a fourway valve as shown in several views of the drawings and more particularly in Fig. 4.

25 and 26 are pipes connecting to the outer ends of the cylinders 1 and 3 respectively, through which the water is conveyed to and from the cylinders through the valve 23, and exhaust pipe 27, as indicated by arrows.

The operation of the apparatus thus far described is as follows: The parts being in the'position shown in Fig. 1 fruit passes from the hopper 16 into press cylinder 7 in front of the plunger 6. Vater under pressure is then admitted to cylinder 1, through pipes 22 and 24 and the'plunger 6 moves forward and presses said fruit to a certain extent. The water for the cylinder 2 then passes through the by-pass 20, and into cylinder 3 and moves the piston 4 therein and thereby draws the head 12 up against the end of the press and the fruit is conducted against body 8 in the press cylinder 7 by the forward movement of plunger 6 as shown in Fig. 1 and the juice is thereby squeezed out of it. lVhen this operation is completed the valve 23 is automatically turned so that the water may pass from the cylinders 1 and 3 through pipe 24 and valve 23 and pipe 27 and at the same time the water under pressure from pipe 22 passes through pipes 25 and 26 and retracts the pistons 2 and 4, thus drawing back the pressure plunger 6 and opening the end of the cylinder by moving the head 12 away from it. Piston 4 as it retracts or moves backward, forces the water in cylinder 3 to pass out through the by-pass 20 and valve 21 into the cylinder 1 and out through pipe 24, valve 23 and exhaust pipe 27 as clearly shown in Fig. 1, the arrows indicating the course of the water and the movements of pistons 2 and 4 up to the limit of the backward stroke. A new body of fruit then passes from the hopper 16 into the cylinder 7 in front of plunger 6, which, with the new body of fruit, presses the previously exhausted material 8 out of the cylinder 7 and it passes off by chute 14. This continues until the pressure behind piston 2 becomes sulhcient to open'valve 21 in the manner to be described, and water passes into cylinder 3 and by the operation already described lcloses the head 12 against cylinder 7 and the new mass of fruit is pressed against the remaining body, in that cylinder.

Referring particularly to Fig. 2, 28 is a pin upon the plunger 6. 29 is a bar mounted so as to slide at one side of the apparatus and `provided with adjustable fingers 30, 31 and 32. The arrangement is such that the pin 28 contacts with finger 30 and moves bar 29 to the right and the linger 31 then contacts with the valve controlling means and shifts the position as shown by dotted lines in Fig. 2. It will be seen that the valve is a four-way valve as before mentioned and its controlling means consists of two arms 33 and 34 secured to the valve stem 35 and projecting therefrom at right angles to each other. rlhe ends of said arms are provided with weights 36, the object of which will be further mentioned hereafter. |The stem 35 is provided with a projection 37 acting in the notch 38 formed in the hub of the arms, the purpose of which is to allow the arms to travel freely to a point beyond the center of gravity before engaging the projection 37 of the stem. To better illustrate this part of my invention suppose the apparatus to be in the position shown in Fig. 1, in which the backward stroke is about to be completed. vWater has been entering the outer ends of cylinders 1 and 3 through valve 23 and pipes 25 and 26 and exhausting from their inner ends through pipes 24, and 27 and through the valve. Pin 28 on plunger 6 has acted on arm 34 through the intermediate parts and moved the arms to the left to such a position that their weight assisted by that of the balls on them continues the movement till they occupy the position shown in Fig. 3, carrying the valve with them. lVater now passes from supply pipe 22 through the valve 23 and pipe 24 into the inner end of cylinder 1 and exhausts from its outer end through pipes 25 and 27 and the forward stroke begins. During this forward stroke pin 28 impinges against linger 30 and moves bar 29 to the right and finger 31 on the bar acts on arm 33 and moves the arms to the right. The valve remains stationary owing to the play of its projection 37 in the notch 38 until the stop 37 engages the left hand wall of the notch 38 which is near the end of the forward stroke. Here the gravity of the arms and balls carries them onward, and the valve with them until the stop 37 is on a horizontal plane with the pipe 22, wherein the valve is in position to admit water again to the outer ends of the cylinders and exhaust it from the inner ends.

The length of stroke of the press plunger may be varied at will by adjusting the .lingers 30, 31 and 32 to different positions on bar 29.

By the above construction I secure a continuous operation of the machine and all that is necessary for the attendant to do is to keep up the feed of material to be operated on.

Claims:

1. A press comprising in combination, a pressure cylinder, a hollow pressure plunger operating therein, two directly connected power cylinders extending into the plunger, one to operate said pressure plunger and one to operate the closure of the pressure cylinder, and a resistance in the connection of said power cylinders, whereby they have different periods of action.

2. A press comprising in combination, a pressure cylinder, a pressure plunger operating therein, two directly connected power cylinders, one to operate said pressure plunger and one to move the head of the pressure cylinder, and a resistance in the connection of said power cylinders, whereby they have dilferent periods of action.

3. A press comprising in combination a perforated pressure cylinder, a compressive plunger operating therein, a power cylinder for actuating said plunger, an axially movable head for closing the end of the pressure cylinder, a power cylinder, and means coacting with the power cylinder' and moving in the direction of motion of said compressive plunger for moving said head.

4. A press comprising in combination a pressure cylinder, a compressive plunger operating therein, an automatic means for actuating sai-:il plunger, a part of said means being movable with the plunger, an axially movable head for closing the end of the pressure cylinder and automatic means embodying a valve shifter and a member on said compressive plunger engaging said valve shifter for moving said head.

5. The combination in a press, of a pressure-cylinder, a pressure plunger adapted to travel in said cylinder, means comprising a power cylinder for actuating said plunger, a cylinder head for closing an end of said pressure cylinder, and means controlled by the power cylinder for moving said cylinder-head in the direction of travel of the pressure plunger into and out of contact with said pressure-cylinder.

6. A press comprising in combination a pressure cylinder, a compressive plnugeri operating therein, a cylinder having means for actuating said plunger, a movable head for closing the end of the pressure cylinder, a cylinder having means for moving said head, and a by-pass connecting said two last named cylinders.

7. A press comprising in combination a pressure cylinder, a compressive plunger operating therein a hydraulic cylinder for actuating said plunger, a movable head for closing the end of the pressure cylinder, a second hydraulic cylinder for moving said head and a double valve connecting said hydraulic cylinders together'.

8. A press comprising in combination a pressure cylinder, a compressive plunger operating therein, a power cylinder for actuating said plunger, a movable head for closing the end of the pressure cylinder and a power cylinder for moving said head, a bypass connecting said power cylinders provided with a spring valve whereby the pressure plunger performs a portion of its movements in advance of the movement of the head.

9. A press comprising in combination a pressure chamber, a compressive plunger operating therein, a power chamber, a combined supply and exhaust pipe connected to said power chamber for actuating said plunger, automatic means operated by said pressure plungers to direct iluid under pressure to or from said power chamber, a cylinder-head on the pressure chamber, and means coacting with said automatic means for moving said cylinder-head alternately to and from the pressure chamber.

lO. A press comprising in combina-tion a pressure cylinder, a compressive plunger operating therein, a power cylinder for actuating said plunger, a head movable in the line of travel of the plunger for closing the end of the pressure cylinder, a power cylinder axially alined with the lirst said power cylinder and carrying a piston which is rigidly connected with the movable head for moving said head, water pipes connecting with said power cylinders and automatic means coacting with the compressive plunger for directing the water to or from said cylinders.

11. A press comprising in combination a pressure cylinder, a compressive plunger operating therein, a power cylinder for actuating said plunger, a movable head for closing the end of the pressure cylinder and a power cylinder for moving said head, a water pipe connecting with said rst mentioned power cylinder and a four-way valve whereby water may be directed to or from either end of said cylinder and a by-pass connecting said two power cylinders whereby one of said cylinders receives water under pressure from the other.

12. In a press, the combination of a compressive cylinder' and two power cylinders axially alined, a compressive plunger movable within the compressive cylinder and adapted to receive one of said power cylinders and to be actuated thereby, a movable cylinder head for closing one end of the compressive cylinder, and pressure transmission means embodying the other of said power cylinders for drawing the cylinderhead forcefully against the compressive cylinder while the compressive plunger is moving toward said head.

13. A press comprising in combination, a pressure cylinder, a cylindrical pressure plunger operating therein, a power cylinder extending into the plunger and coacting therewith for effecting longitudinal movement thereof, a valve for controlling the supply and exhaust of said cylinder, arms connected to said valve, a slide arranged adjacent to the cylinder and provided with means thereon engaging means upon the plunger for operating said slide, means on the slide for moving said arms, and means on the arms for operating said valve.

14C. In a power press, a pressure cylinder, a hollow cylindrical plunger having a piston-rod secured therein, said piston-rod carrying a piston in such relation as to provide an annular space between the piston and the Vinner periphery of the plunger, a power oylsigned my name in the presence of two Witinder, said plunger extending into said presnesses this 17th day of April, 1908. sure cylinder, and said power cylinder eX- EDGAR T MEAKIN tending into said plunger and coasting with 5 said piston for electing movement thereof Witnesses: l and of the plunger. ELIE J. SPINAS, In testimony thereof, I have hereunto E. W. WILLIAMS.

Y l Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents,

' v Washington, D. C. 

